Interlocking device for controllers.



Atty.

PATENTED JAN. 31. 1905.

E. H. DEWSON. INTERLOGKI NG DEVICE FOR CONTROLLERS.

APPLICATION FILED JUNE 9.1903.

7 mviu'ron, dVa w EM WITNESSES:

UNITED STATES Patented January 31, 1905.

PATENT Orricn.

TO WESTINGHOUSE. TRACTION BRAKE COMPANY, OF PITTSBURG,

PENNSYLVANIA, A CORPORATION OF NEW JERSEY.

INTERLOCKING DEVICE FOR CONTROLLERS.

SPECIFICATION forming part of Letters Patent No. 781,134, dated January 31, 1905.

Application filed June 9, 1903. Serial No. 160,705.

To all whom, it petty concern:

Be it known that I, EDWARD H. DEWSON,

a citizen of the United States, residing in Edgewood Park, county of Allegheny, State 5 of Pennsylvania, have invented a certain new and useful Improvement in Interlocking Devices for Controllers, of which improvement the following is a specification.

This invention relates to interlocking m ech- IO anism for running and braking controllers of electric cars, and has for its main object to provide such a mechanism as may be applied to the exterior of the casing of the runningcontroller without changing or interfering in 5 any way with the controller mechanism within the casing.

My improved device is especially adapted to be used where a braking-controller is to be installed on a car already equipped with a running-controller or where the running and the braking controllers are in separate casings. These controllers are. usually placed in line with each other against the front dashboard of the car; but it often happens that there is 5 not sufficient room to locate the controllercasings in this relative position, and it is then necessary to locate the braking-controller casing at one side of and at an angle to the running-controller casing, and my improved interlocking mechanism is designed to allow any such adjustment in the relative location of the controllers as may be desired.

In the accompanying drawings, illustrating an embodiment of my invention, Figure 1 is a plan view showing in full lines the two controller-casings located at an angle to each other and connected by my improved interlocking mechanism, another relative position being indicated in dotted lines; Fig. 2 is a plan view of the top or cover of the brakingcontroller with the cover-plate for the locking-lever removed and the rain-check ring shown in horizontal section. Fig. 3 is a vertical section of a portion of the running-con- 45 troller top and rain-check ring, taken on the line acof Fig. 1; and Fig. 4 is acorresponding vertical section of the braking-controller top, taken on the line 3 g of Fig. 1.

According to this form of my invention a locking-lever 11 is pivoted on the brakingcontroller top 7, and the squared end of the braking-controller shaft 9 carries a rain-check ring 10, having a recess 12, adapted to be engaged by the hooked end 13 of the lever 11, the other end of which is pivotally connected, 55 by means of a rod lt, with a corresponding lever 5, pivoted upon the top or cover 1 of the running-controller. One end of the lever 5 carries a roller 6, adapted to engage the recess 1 in the rain-check ring 2, mounted on the squared end 3 of the shaft of the runningcontroller. A cover-plate or casing 8 may be provided for the locking-lever 11, and, as shown, this casing is adapted to be screwed to the top of the braking-controller and has a semicircular portion formed in one end for fitting closely about the rain-check ring 10'.

On the rod 14, within the casing 8, is mounted a coiled spring 16, which normally tends to push the lever 11 over and withdraw the hooked end 13 from the recess 12 of the raincheck ring 10. An opening 15 is made in the casing 8 to allow the rod 1 1 to pass through, and this opening may be made at any point along the side of the casing, so that the braking-controller may be adjusted to any position from that shown in full lines, Fig. 1, to that indicated in dotted lines.

The interlocking mechanism performs the usual function of preventing the movement of the braking-controller except when the running-controller is in its off or neutral position and also locks the running-controller against movement from its off position when the braking-controller is moved to any live position. As shown in Fig. 1, shaft 3 of the runningcontroller is indicated in its ofi or neutral position, with the roller 6 of lever 5 engaging the recess 1 of the combined rain-check and locking-ring 2, which is mounted to rotate with said shaft. In this position the spring 16 holds the hooked end 13 of lever 11 out of recess 12 of the rain-check and locking-ring 10, mounted on the squared end of the braking-controller shaft, so that the braking-controller may then be freely manipulated to any position for controlling the brakes as desired. lV hen the braking-controller is moved to any position other than its off position, as shown in Fig. 1, the flange of the rain-check ring prevents the inward movement of the end 18 of lever 11, so that the end of lever 5 is held in engagement with the recess 4: of ring 2, thus locking the running-controller in its off position. Then the braking-controller is in its off position and the running-controller is moved to any live position, the roller 6 of lever 5 rides upon the outer flange of the ring 2, turning lever 5 upon its pivot, and by means of rod lL turning lever 11, so that its hooked end 13 engages the recess 12 in ring 10, thus compressing the spring 16 and locking the braking-controller in its off position.

It will now be seen that my improved interlocking mechanism is adapted to be applied to the present form of 1'unning-controllers without in any way changing or interfering with the controller mechanism within the easing, all that is necessary being to pivot a lever to the controller-top and substitute a combined rain-check and locking-ring in place of the ordinary raincheck.

Having now described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. An interlocking device for controllers, comprising a lever pivoted on the outside of the running-controller top, a recessed ring mounted on the shaft of the running-controller for engaging said lever, and means operated by said lever for locking the shaft of the braking-controller.

2. An interlocking device for controllers, comprising a lever pivoted to the outside of the casing of the running-controller, a ring mounted on the running-controller shaft for engaging said lever, a locking-lever pivoted to the casing of the braking-controller, a rod connecting said levers, and a locking-ring mounted on the braking-controller shaft.

3. The combination with a running-controller and a braking-controller having separate shafts and casings, of a lever pivoted to the outside of each controller-top, a ring on each shaft for engaging the respective levers, and a rod connecting said levers.

4. The combination with a controller having a top plate or cover andashaft extending therethrough, of a combined rain-check and locking-ring rigidly mounted on the shaft above the top plate, and means for locking said ring.

5. The combination with a controller having a top plate or cover and a shaft extending therethrough, of a combined raincheck and locking-ring rigidly mounted on the shaft above the top plate, and a lever pivoted on the outside of the controller-top for locking said ring.

6. In aninterlocking device for controllers, the combination with a locking-lever pivoted to the top of the braking-controller and a locking-ring mounted on the brakirig-controller shaft for engaging said lover, of a spring for normally holding said lever in one position, and a rod actuated by the shaft of the running-controller for moving said lever against the spring.

7. In an interlocking device for controllers, the combination with a rain-check and lock ing-ring mounted on the controller-shaft, of lockingmechanism mounted on the controllertop for engaging said ring, and a cover-plate or casing for said mechanism, said casinghaving a curved portion for closely [itting said ring.

In testimony whereof I. have hereunto set my hand.

EDWARD H. DElVSON.

Vitnesses:

R. F. EMERY, JAs. B. l\[ACDONALD. 

